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Finding the Fourth Proportional to 236,092.20, 325,810.80 and 128,661.90

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Solution

The fourth proportional to 236,092.20, 325,810.80 and 128,661.90 is: 177,555.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,092.20 : 325,810.80 = 128,661.90 : x
  2. Step 2: Convert to fraction form
    236,092.20/325,810.80 = 128,661.90/x
  3. Step 3: Cross multiply
    236,092.20x = 325,810.80 × 128,661.90
  4. Step 4: Simplify right side
    236,092.20x = 41,919,436,568.52
  5. Step 5: Solve for x
    x = 41,919,436,568.52/236,092.20
  6. Step 6: Final answer
    x = 177,555.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.